Question

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elevations are measured compared to sea level. an elevation of 0 feet is \at sea level.\ an elevation less than 0 feet is \below sea level.\which two of these elevations are below sea level?-5 ft -2 ftlet x be an elevation. write an inequality to represent elevations below sea level.x < 0which number line shows elevations below sea level?

Explanation:

Step1: Identify below sea level values

Elevations below sea level are less than 0. So -5 ft and -2 ft are valid.

Step2: Write the inequality

Elevations below sea level are all values of $x$ less than 0, so $x < 0$.

Step3: Select correct number line

Below sea level means values less than 0, so the number line should have an open circle at 0 and shade left.

Answer:

1. -5 ft, -2 ft
2. $x < 0$
3. The left number line (open circle at 0, shading to the left towards negative numbers)